190765 has 4 divisors (see below), whose sum is σ = 228924. Its totient is φ = 152608.

The previous prime is 190763. The next prime is 190769. The reversal of 190765 is 567091.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 567091 = 7 ⋅81013.

It can be written as a sum of positive squares in 2 ways, for example, as 104329 + 86436 = 323^2 + 294^2 .

It is a cyclic number.

It is not a de Polignac number, because 190765 - 2¹ = 190763 is a prime.

It is a Duffinian number.

190765 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190763) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19072 + ... + 19081.

It is an arithmetic number, because the mean of its divisors is an integer number (57231).

2¹⁹⁰⁷⁶⁵ is an apocalyptic number.

It is an amenable number.

190765 is a deficient number, since it is larger than the sum of its proper divisors (38159).

190765 is an equidigital number, since it uses as much as digits as its factorization.

190765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38158.

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 190765 is about 436.7665280216. The cubic root of 190765 is about 57.5660237189.

The spelling of 190765 in words is "one hundred ninety thousand, seven hundred sixty-five".